Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2021 2 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/07/2021   10:07:26   (   0.42,-127.26) (   1.06,-130.21)  335.85                80
 02/08/2021   09:46:01   (   0.41,-127.21) (   0.04,-125.68)  175.26                80
 02/09/2021   22:10:37   (  -0.44,-127.21) (  -1.27,-130.97)  428.84                80
 02/10/2021   21:49:12   (  -0.42,-127.16) (  -0.25,-126.44)   82.34                80
 02/13/2021   09:54:54   (   0.44,-126.98) (   0.49,-127.16)   21.33                80
 02/14/2021   09:33:30   (   0.43,-126.93) (  -0.54,-122.64)  489.63                80
 02/15/2021   21:58:05   (  -0.45,-126.93) (  -0.69,-127.93)  114.82                80
 02/16/2021   21:36:40   (  -0.44,-126.88) (   0.34,-123.40)  396.21                80
 02/18/2021   10:01:08   (   0.47,-126.74) (   0.88,-128.66)  219.02                80
 02/19/2021   09:39:42   (   0.46,-126.69) (  -0.09,-124.12)  291.51                80